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<?php |
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/** |
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* Adds media-related functionality for client-side media processing. |
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* |
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* @package gutenberg |
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*/ |
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|
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if ( ! gutenberg_is_client_side_media_processing_enabled() ) { |
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return; |
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} |
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|
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/** |
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* Sets a global JS variable to indicate that client-side media processing is enabled. |
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*/ |
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function gutenberg_set_client_side_media_processing_flag() { |
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if ( ! gutenberg_is_client_side_media_processing_enabled() ) { |
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return; |
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} |
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wp_add_inline_script( 'wp-block-editor', 'window.__clientSideMediaProcessing = true', 'before' ); |
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} |
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add_action( 'admin_init', 'gutenberg_set_client_side_media_processing_flag' ); |
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|
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/** |
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* Returns a list of all available image sizes. |
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* |
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* @return array Existing image sizes. |
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*/ |
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function gutenberg_get_all_image_sizes(): array { |
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$sizes = wp_get_registered_image_subsizes(); |
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|
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foreach ( $sizes as $name => &$size ) { |
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$size['height'] = (int) $size['height']; |
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$size['width'] = (int) $size['width']; |
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$size['name'] = $name; |
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} |
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unset( $size ); |
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|
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return $sizes; |
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} |
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|
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/** |
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* Returns the default output format mapping for the supported image formats. |
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* |
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* @return array<string,string> Map of input formats to output formats. |
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*/ |
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function gutenberg_get_default_image_output_formats() { |
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$input_formats = array( |
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'image/jpeg', |
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'image/png', |
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'image/gif', |
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'image/webp', |
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'image/avif', |
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'image/heic', |
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); |
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|
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$output_formats = array(); |
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|
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foreach ( $input_formats as $mime_type ) { |
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/** This filter is documented in wp-includes/media.php */ |
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$output_formats = apply_filters( |
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'image_editor_output_format', // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound |
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$output_formats, |
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'', |
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$mime_type |
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); |
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} |
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|
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return $output_formats; |
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} |
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|
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/** |
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* Filters the REST API root index data to add custom settings. |
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* |
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* @param WP_REST_Response $response Response data. |
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*/ |
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function gutenberg_media_processing_filter_rest_index( WP_REST_Response $response ) { |
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/** This filter is documented in wp-admin/includes/images.php */ |
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$image_size_threshold = (int) apply_filters( 'big_image_size_threshold', 2560, array( 0, 0 ), '', 0 ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound |
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|
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$default_image_output_formats = gutenberg_get_default_image_output_formats(); |
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|
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/** This filter is documented in wp-includes/class-wp-image-editor-imagick.php */ |
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$jpeg_interlaced = (bool) apply_filters( 'image_save_progressive', false, 'image/jpeg' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound |
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/** This filter is documented in wp-includes/class-wp-image-editor-imagick.php */ |
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$png_interlaced = (bool) apply_filters( 'image_save_progressive', false, 'image/png' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound |
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/** This filter is documented in wp-includes/class-wp-image-editor-imagick.php */ |
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$gif_interlaced = (bool) apply_filters( 'image_save_progressive', false, 'image/gif' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound |
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|
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if ( current_user_can( 'upload_files' ) ) { |
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$response->data['image_sizes'] = gutenberg_get_all_image_sizes(); |
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$response->data['image_size_threshold'] = $image_size_threshold; |
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$response->data['image_output_formats'] = (object) $default_image_output_formats; |
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$response->data['jpeg_interlaced'] = $jpeg_interlaced; |
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$response->data['png_interlaced'] = $png_interlaced; |
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$response->data['gif_interlaced'] = $gif_interlaced; |
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} |
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|
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return $response; |
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} |
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|
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add_filter( 'rest_index', 'gutenberg_media_processing_filter_rest_index' ); |
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|
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|
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/** |
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* Overrides the REST controller for the attachment post type. |
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* |
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* @param array $args Array of arguments for registering a post type. |
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* See the register_post_type() function for accepted arguments. |
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* @param string $post_type Post type key. |
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*/ |
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function gutenberg_filter_attachment_post_type_args( array $args, string $post_type ): array { |
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if ( 'attachment' === $post_type ) { |
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require_once __DIR__ . '/class-gutenberg-rest-attachments-controller.php'; |
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|
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$args['rest_controller_class'] = Gutenberg_REST_Attachments_Controller::class; |
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} |
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|
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return $args; |
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} |
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|
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add_filter( 'register_post_type_args', 'gutenberg_filter_attachment_post_type_args', 10, 2 ); |
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|
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|
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/** |
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* Registers additional REST fields for attachments. |
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*/ |
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function gutenberg_media_processing_register_rest_fields(): void { |
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register_rest_field( |
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'attachment', |
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'filename', |
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array( |
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'schema' => array( |
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'description' => __( 'Original attachment file name', 'gutenberg' ), |
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'type' => 'string', |
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'context' => array( 'view', 'edit' ), |
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), |
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'get_callback' => 'gutenberg_rest_get_attachment_filename', |
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) |
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); |
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|
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register_rest_field( |
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'attachment', |
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'filesize', |
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array( |
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'schema' => array( |
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'description' => __( 'Attachment file size', 'gutenberg' ), |
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'type' => 'number', |
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'context' => array( 'view', 'edit' ), |
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), |
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'get_callback' => 'gutenberg_rest_get_attachment_filesize', |
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) |
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); |
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} |
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|
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add_action( 'rest_api_init', 'gutenberg_media_processing_register_rest_fields' ); |
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|
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/** |
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* Returns the attachment's original file name. |
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* |
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* @param array $post Post data. |
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* @return string|null Attachment file name. |
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*/ |
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function gutenberg_rest_get_attachment_filename( array $post ): ?string { |
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$path = wp_get_original_image_path( $post['id'] ); |
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|
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if ( $path ) { |
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return basename( $path ); |
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} |
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|
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$path = get_attached_file( $post['id'] ); |
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|
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if ( $path ) { |
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return basename( $path ); |
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} |
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|
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return null; |
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} |
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|
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/** |
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* Returns the attachment's file size in bytes. |
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* |
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* @param array $post Post data. |
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* @return int|null Attachment file size. |
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*/ |
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function gutenberg_rest_get_attachment_filesize( array $post ): ?int { |
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$attachment_id = $post['id']; |
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|
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$meta = wp_get_attachment_metadata( $attachment_id ); |
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|
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if ( isset( $meta['filesize'] ) ) { |
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return $meta['filesize']; |
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} |
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|
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$original_path = wp_get_original_image_path( $attachment_id ); |
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$attached_file = $original_path ? $original_path : get_attached_file( $attachment_id ); |
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|
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if ( is_string( $attached_file ) && file_exists( $attached_file ) ) { |
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return wp_filesize( $attached_file ); |
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} |
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|
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return null; |
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} |
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|
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/** |
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* Filters the list of rewrite rules formatted for output to an .htaccess file. |
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* |
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* Adds support for serving wasm-vips locally. |
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* |
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* @param string $rules mod_rewrite Rewrite rules formatted for .htaccess. |
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* @return string Filtered rewrite rules. |
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*/ |
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function gutenberg_filter_mod_rewrite_rules( string $rules ): string { |
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$rules .= "\n# BEGIN Gutenberg client-side media processing\n" . |
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"AddType application/wasm wasm\n" . |
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"# END Gutenberg client-side media processing\n"; |
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|
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return $rules; |
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} |
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|
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add_filter( 'mod_rewrite_rules', 'gutenberg_filter_mod_rewrite_rules' ); |
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|
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/** |
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* Enables cross-origin isolation in the block editor. |
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* |
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* Required for enabling SharedArrayBuffer for WebAssembly-based |
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* media processing in the editor. |
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* |
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* @link https://web.dev/coop-coep/ |
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*/ |
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function gutenberg_set_up_cross_origin_isolation() { |
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// Re-check the filter at action time, since other plugins (loaded after Gutenberg) |
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// may have added a filter to disable client-side media processing. |
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if ( ! gutenberg_is_client_side_media_processing_enabled() ) { |
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return; |
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} |
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|
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$screen = get_current_screen(); |
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|
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if ( ! $screen ) { |
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return; |
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} |
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|
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if ( ! $screen->is_block_editor() && 'site-editor' !== $screen->id && ! ( 'widgets' === $screen->id && wp_use_widgets_block_editor() ) ) { |
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return; |
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} |
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|
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$user_id = get_current_user_id(); |
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if ( ! $user_id ) { |
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return; |
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} |
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|
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// Cross-origin isolation is not needed if users can't upload files anyway. |
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if ( ! user_can( $user_id, 'upload_files' ) ) { |
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return; |
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} |
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|
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gutenberg_start_cross_origin_isolation_output_buffer(); |
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} |
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|
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add_action( 'load-post.php', 'gutenberg_set_up_cross_origin_isolation' ); |
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add_action( 'load-post-new.php', 'gutenberg_set_up_cross_origin_isolation' ); |
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add_action( 'load-site-editor.php', 'gutenberg_set_up_cross_origin_isolation' ); |
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add_action( 'load-widgets.php', 'gutenberg_set_up_cross_origin_isolation' ); |
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|
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/** |
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* Sends headers for cross-origin isolation. |
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* |
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* Uses an output buffer to add crossorigin="anonymous" where needed. |
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* |
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* @link https://web.dev/coop-coep/ |
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* |
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* @global bool $is_safari |
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*/ |
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function gutenberg_start_cross_origin_isolation_output_buffer(): void { |
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global $is_safari; |
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|
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$coep = $is_safari ? 'require-corp' : 'credentialless'; |
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|
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ob_start( |
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function ( string $output ) use ( $coep ): string { |
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header( 'Cross-Origin-Opener-Policy: same-origin' ); |
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header( "Cross-Origin-Embedder-Policy: $coep" ); |
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|
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return gutenberg_add_crossorigin_attributes( $output ); |
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} |
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); |
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} |
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|
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/** |
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* Adds crossorigin="anonymous" to relevant tags in the given HTML string. |
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* |
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* @param string $html HTML input. |
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* |
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* @return string Modified HTML. |
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*/ |
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function gutenberg_add_crossorigin_attributes( string $html ): string { |
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$site_url = site_url(); |
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|
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$processor = new WP_HTML_Tag_Processor( $html ); |
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|
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// See https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/crossorigin. |
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$tags = array( |
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'AUDIO' => 'src', |
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'IMG' => 'src', |
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'LINK' => 'href', |
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'SCRIPT' => 'src', |
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'VIDEO' => 'src', |
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'SOURCE' => 'src', |
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); |
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|
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$tag_names = array_keys( $tags ); |
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|
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while ( $processor->next_tag() ) { |
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$tag = $processor->get_tag(); |
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|
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if ( ! in_array( $tag, $tag_names, true ) ) { |
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continue; |
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} |
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|
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if ( 'AUDIO' === $tag || 'VIDEO' === $tag ) { |
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$processor->set_bookmark( 'audio-video-parent' ); |
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} |
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|
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$processor->set_bookmark( 'resume' ); |
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|
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$sought = false; |
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|
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$crossorigin = $processor->get_attribute( 'crossorigin' ); |
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|
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$url = $processor->get_attribute( $tags[ $tag ] ); |
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|
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if ( is_string( $url ) && ! str_starts_with( $url, $site_url ) && ! str_starts_with( $url, '/' ) && ! is_string( $crossorigin ) ) { |
| 333 |
if ( 'SOURCE' === $tag ) { |
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$sought = $processor->seek( 'audio-video-parent' ); |
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|
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if ( $sought ) { |
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$processor->set_attribute( 'crossorigin', 'anonymous' ); |
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} |
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} else { |
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$processor->set_attribute( 'crossorigin', 'anonymous' ); |
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} |
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|
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if ( $sought ) { |
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$processor->seek( 'resume' ); |
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$processor->release_bookmark( 'audio-video-parent' ); |
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} |
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} |
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} |
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|
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return $processor->get_updated_html(); |
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} |
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|
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/** |
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* Overrides templates from wp_print_media_templates with custom ones. |
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* |
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* Adds `crossorigin` attribute to all tags that |
| 357 |
* could have assets loaded from a different domain. |
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*/ |
| 359 |
function gutenberg_override_media_templates(): void { |
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remove_action( 'admin_footer', 'wp_print_media_templates' ); |
| 361 |
add_action( |
| 362 |
'admin_footer', |
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static function (): void { |
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ob_start(); |
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wp_print_media_templates(); |
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$html = (string) ob_get_clean(); |
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|
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$tags = array( |
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'audio', |
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'img', |
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'video', |
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); |
| 373 |
|
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foreach ( $tags as $tag ) { |
| 375 |
$html = (string) str_replace( "<$tag", "<$tag crossorigin=\"anonymous\"", $html ); |
| 376 |
} |
| 377 |
|
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echo $html; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped |
| 379 |
} |
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); |
| 381 |
} |
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|
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add_action( 'wp_enqueue_media', 'gutenberg_override_media_templates' ); |
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|
